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/*
* Test unsigned left and right shift
*
* This work is licensed under the terms of the GNU LGPL, version 2 or later.
* See the COPYING.LIB file in the top-level directory.
*
*/
#include "qemu/osdep.h"
#include "qemu/host-utils.h"
typedef struct {
uint64_t low;
uint64_t high;
uint64_t rlow;
uint64_t rhigh;
int32_t shift;
bool overflow;
} test_data;
static const test_data test_ltable[] = {
{ 0x4C7ULL, 0x0ULL, 0x00000000000004C7ULL,
0x0000000000000000ULL, 0, false },
{ 0x001ULL, 0x0ULL, 0x0000000000000002ULL,
0x0000000000000000ULL, 1, false },
{ 0x001ULL, 0x0ULL, 0x0000000000000004ULL,
0x0000000000000000ULL, 2, false },
{ 0x001ULL, 0x0ULL, 0x0000000000000010ULL,
0x0000000000000000ULL, 4, false },
{ 0x001ULL, 0x0ULL, 0x0000000000000100ULL,
0x0000000000000000ULL, 8, false },
{ 0x001ULL, 0x0ULL, 0x0000000000010000ULL,
0x0000000000000000ULL, 16, false },
{ 0x001ULL, 0x0ULL, 0x0000000080000000ULL,
0x0000000000000000ULL, 31, false },
{ 0x001ULL, 0x0ULL, 0x0000200000000000ULL,
0x0000000000000000ULL, 45, false },
{ 0x001ULL, 0x0ULL, 0x1000000000000000ULL,
0x0000000000000000ULL, 60, false },
{ 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
0x0000000000000001ULL, 64, false },
{ 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
0x0000000000010000ULL, 80, false },
{ 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
0x8000000000000000ULL, 127, false },
{ 0x000ULL, 0x1ULL, 0x0000000000000000ULL,
0x0000000000000000ULL, 64, true },
{ 0x008ULL, 0x0ULL, 0x0000000000000000ULL,
0x0000000000000008ULL, 64, false },
{ 0x008ULL, 0x0ULL, 0x0000000000000000ULL,
0x8000000000000000ULL, 124, false },
{ 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
0x4000000000000000ULL, 126, false },
{ 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
0x8000000000000000ULL, 127, false },
{ 0x001ULL, 0x0ULL, 0x0000000000000001ULL,
0x0000000000000000ULL, 128, false },
{ 0x000ULL, 0x0ULL, 0x0000000000000000ULL,
0x0000000000000000ULL, 200, false },
{ 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
0x0000000000000100ULL, 200, false },
{ 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
0x8000000000000000ULL, -1, false },
{ 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
0x8000000000000000ULL, INT32_MAX, false },
{ 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
0x4000000000000000ULL, -2, false },
{ 0x001ULL, 0x0ULL, 0x0000000000000000ULL,
0x4000000000000000ULL, INT32_MAX - 1, false },
{ 0x8888888888888888ULL, 0x9999999999999999ULL,
0x8000000000000000ULL, 0x9888888888888888ULL, 60, true },
{ 0x8888888888888888ULL, 0x9999999999999999ULL,
0x0000000000000000ULL, 0x8888888888888888ULL, 64, true },
};
static const test_data test_rtable[] = {
{ 0x00000000000004C7ULL, 0x0ULL, 0x00000000000004C7ULL, 0x0ULL, 0, false },
{ 0x0800000000000000ULL, 0x0ULL, 0x0400000000000000ULL, 0x0ULL, 1, false },
{ 0x0800000000000000ULL, 0x0ULL, 0x0200000000000000ULL, 0x0ULL, 2, false },
{ 0x0800000000000000ULL, 0x0ULL, 0x0008000000000000ULL, 0x0ULL, 8, false },
{ 0x0800000000000000ULL, 0x0ULL, 0x0000080000000000ULL, 0x0ULL, 16, false },
{ 0x0800000000000000ULL, 0x0ULL, 0x0000000008000000ULL, 0x0ULL, 32, false },
{ 0x8000000000000000ULL, 0x0ULL, 0x0000000000000001ULL, 0x0ULL, 63, false },
{ 0x8000000000000000ULL, 0x0ULL, 0x0000000000000000ULL, 0x0ULL, 64, false },
{ 0x0000000000000000ULL, 0x8000000000000000ULL,
0x0000000000000000ULL, 0x8000000000000000ULL, 128, false },
{ 0x0000000000000000ULL, 0x8000000000000000ULL,
0x0080000000000000ULL, 0x0000000000000000ULL, 200, false },
{ 0x0000000000000000ULL, 0x0000000000000000ULL,
0x0000000000000000ULL, 0x0000000000000000ULL, 200, false },
{ 0x0000000000000000ULL, 0x8000000000000000ULL,
0x0000000000000000ULL, 0x0000000000000080ULL, -200, false },
{ 0x8000000000000000ULL, 0x8000000000000000ULL,
0x0000000080000000ULL, 0x0000000080000000ULL, 32, false },
{ 0x0800000000000000ULL, 0x0800000000000000ULL,
0x0800000000000000ULL, 0x0000000000000000ULL, 64, false },
{ 0x0800000000000000ULL, 0x0800000000000000ULL,
0x0008000000000000ULL, 0x0000000000000000ULL, 72, false },
{ 0x8000000000000000ULL, 0x8000000000000000ULL,
0x0000000000000001ULL, 0x0000000000000000ULL, 127, false },
{ 0x0000000000000000ULL, 0x8000000000000000ULL,
0x0000000000000001ULL, 0x0000000000000000ULL, -1, false },
{ 0x0000000000000000ULL, 0x8000000000000000ULL,
0x0000000000000002ULL, 0x0000000000000000ULL, -2, false },
};
static void test_lshift(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(test_ltable); ++i) {
bool overflow = false;
test_data tmp = test_ltable[i];
ulshift(&tmp.low, &tmp.high, tmp.shift, &overflow);
g_assert_cmpuint(tmp.low, ==, tmp.rlow);
g_assert_cmpuint(tmp.high, ==, tmp.rhigh);
g_assert_cmpuint(tmp.overflow, ==, overflow);
}
}
static void test_rshift(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(test_rtable); ++i) {
test_data tmp = test_rtable[i];
urshift(&tmp.low, &tmp.high, tmp.shift);
g_assert_cmpuint(tmp.low, ==, tmp.rlow);
g_assert_cmpuint(tmp.high, ==, tmp.rhigh);
}
}
int main(int argc, char **argv)
{
g_test_init(&argc, &argv, NULL);
g_test_add_func("/host-utils/test_lshift", test_lshift);
g_test_add_func("/host-utils/test_rshift", test_rshift);
return g_test_run();
}
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